Bar Magnets

Bar magnets are used in physics education labs to show magnetic fields when used with compasses or iron filings & can be used to pickup light metal objects such as paper clips.

Bar magnets have distinct North & South poles. They are not very strong but that makes them ideal for showing magnetic field lines when used with iron filings. If they were much stronger, the filings would clump & not show anything useful.

Steel bar magnets can retain their properties up to 20 years if stored with their keepers in place. These are small metal pieces that attach to the ends & maintain the magnetic "circuit". But, the single most important thing is to handle them properly:

Do NOT use steel bar magnets for repulsion. They will demagnetize almost immediately. Use ferrites instead.

Steel Bar Magnets

Click on image for specifications; "1-9" for quantity discounts.
	Use a 6% chrome steel bar magnet with Fe filings or compasses. Not for repulsion experiments!

Note: Red north means the north pole is painted red. The other bars are stamped N/S.

These ferrite bars are best suited for younger children and can also be safely used for repulsion experiments.

Click on image for specifications; "1-9" for quantity discounts.
	Ferrite blocks for repulsion. A pair of ferrite magnets are ideal for younger children.

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P/N	Description	Qty	Unit	($US) U.S.A.($CA) Canada($US) Other
33478	Ferrite bars in plastic, pair		1-9	5.40
33498P	Ferrite bars, NS pair, 50mm		1-9	0.80